(19)

(11)

EP 1 552 271 A1

(12)

(43) Date of publication: 13.07.2005 Bulletin 2005/28 (21) Application number: 03797845.9 (22) Date of filing: 18.08.2003

(51) International Patent Classification (IPC)7: G01N 3/08 (86) International application number: PCT/US2003/025667 (87) International publication number: WO 2004/027392 (01.04.2004 Gazette 2004/14)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 20.09.2002 US 412653 P (71) Applicant: Enventure Global Technology Houston, TX 77084 (US)	(72) Inventors: SHUSTER, Mark Houston, TX 77094 (US) RING, Lev Houston, TX 77077 (US) (74) Representative: Giles, Ashley Simon  HASELTINE LAKE,Redcliff Quay120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)